Question

How long would a train travelling at a speed of 40 km per hour take to travel for tunnel which is 6 km long?

Answer 1

Explanation:

Length of the train = 150m. Speed of the train = 90 km/hr. = 90 × 5/18 m/sec. ...

Length of the train = 340 m. Length of the tunnel = 160m. Therefore, length of the train + length of the tunnel = (340 + 160) m = 500m. ...

Speed of the train = 90 km/hr. Speed of the train = 90 × 5/18 m/sec = 25 m/sec.

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Answer 2

Answer:

.60 km/h means 1 km/minute

so in 2 minutes the train makes 2 km

a train passes a tunnel between its head entering the tunnel and the tail leaving the tunnel

hence the train has to make a distance equal to tunnel length plus its own length

so train length = distance made minus tunnel length, or:

train length = 2 km - 1.5 km = 500 m

Explanation:

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